EXPLOSIVE: Ray Kelly (above) decided to reinstate the firearm of Officer Kenneth Boss following the similar case of Officer Michael Carey, who was cleared in the Sean Bell shooting.

Kenneth Boss

Michael Carey

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Amadou Diallo’s heartsick mother was furious yesterday to learn that one of the cops involved in her son’s death would get his service revolver back — and predicted more bloodshed at the detective’s hands.

“I think he will shoot someone,” a still-grieving Kadiatou Diallo told The Post yesterday, after the newspaper revealed that Officer Kenneth Boss was given his gun back — 13 years after an unarmed Diallo was killed in a hail of 41 shots by four cops.

Boss was issued a standard 9mm service weapon — not the same gun he used to squeeze off five rounds at the 24-year-old Diallo — after NYPD Commissioner Ray Kelly suddenly decided last month to reinstate his gun rights.

Sources said Kelly — who had opposed rearming Boss in the past — did an about-face after another cop involved in a police shooting got his gun back.

Officer Michael Carey was one of four cops who fired 50 shots outside a Queens nightclub in November 2006, killing Sean Bell.

But like Boss, he was later cleared in a department trial.

“In the wake of the Bell shooting, the subsequent exoneration in the trial room of Officer Michael Carey, whose gun-carrying privileges were restored in late June under similar circumstances as the Diallo shooting, played a significant role in the decision to restore Boss’ gun-carry privileges,” the source said.

But Kadiatou Diallo ripped Kelly, charging that he had promised that Boss — the only one of the four cops who shot at Diallo who is still on the force — would never be rearmed.

“I’m shocked to learn this because Commissioner Kelly indicated that that would not happen,” Diallo said.

“Kelly did not keep his word,” she fumed, calling the move “the second shooting of my son.”

Diallo said Boss, currently assigned to Emergency Service Unit headquarters at Floyd Bennett Field, would not be welcome if he were sent onto the streets.

She vowed to fight the ruling by calling on the Rev. Al Sharpton and ex-Mayor David Dinkins to help organize a rally tentatively set for 2 p.m. Sunday at City Hall and proceeding to 1 Police Plaza.

Her husband, Diallo’s stepdad, Sankarela Diallo, echoed her fears of a repeat incident.

“He is going to shoot again. The same thing he did to Amadou he is going to do it to someone else,” he said.

Meanwhile, sources said Boss — who took a leave and served in the US Marines in Iraq in 2006 — was relieved over the decision.

“He’s relieved that it’s over, and he feels vindicated. He wanted his guns back and thinks he deserved it,” a police source said.

And one of the cops involved in the Diallo shooting praised the move yesterday.

“That’s great,” said Officer Richard Murphy, of Orange County.

Boss had been acquitted of criminal charges in the case and cleared of wrongdoing by the NYPD Firearms Discharge Review Board.